Our baby’s mother rather resented the idea of being to her baby only a collection of detached phenomena, instead of a mamma; but the more you think of it the more flattering it is to be thus, as it were, dissolved into your elements and incorporated item by item into the very foundations of your baby’s mental life. Herein is hinted much of the philosophy of personality; and Professor Baldwin has written a solid book, mainly to show from the development of babies and little children that all other people are part of each of us, and each of us is part of all other people, and so there is really no separate personality, but we are all one spirit, if we did but know it. V BEGINNINGS OF EMOTION AND PROGRESS IN SENSE POWERS The baby entered on her second month well content with her fragmentary little world of glancing lights and shining surfaces, chords and voices, disconnected touches and motions. Her smiles began to be frequent and jolly. It was always at faces that she smiled now: nothing else seemed half as entertaining. The way in which a baby, in these early weeks, gazes and gazes up into one’s face, and smiles genially at it, wiles the very heart out of one; but the baby means little enough by it. In this fortnight her pleasures were enlarged by introduction to a baby carriage. The outdoor sights and sounds were of course wasted on her at this stage of her seeing and hearing powers; but she liked the feeling of the motion, and lay and enjoyed it with a tranquilly beatific look. Perhaps also the fresher air and larger light sent some dim wave of pleasant feeling through her body. Some days earlier, when carried out in arms for her first outdoor visit, she had found the light dazzling, and kept her eyes tight shut. In all I have said of babies’ pleasure in light, I have meant moderate light: the little eyes are easily hurt by a glare. There are nursemaids, and even mothers, who will wheel a baby along the street with the sun blazing full in his face, and who will keep a light burning all night for their own convenience in tending him; and in later years his schoolbooks will get the credit of having weakened his eyes. Nature protects the little one somewhat at the outset, for at first the eyes open by a narrow slit, which admits but scanty light: our baby was just beginning, at a month old, to open her eyes like other folk.